Tire bead ring production, processing and straightening device and method thereof

Abstract

The invention relates to a tire bead ring producing, machining and straightening device and method, and belongs to the technical field of tire producing and machining equipment.The tire bead ring producing, machining and straightening device comprises a main body rack, and a guide rail and a mounting base plane are arranged on the main body rack; the pretreatment module is installed at the feeding end of the main body rack, and the pretreatment module comprises a clamping device used for clamping a steel wire ring and a feeding roller driven by a servo motor; the straightening module is installed on the installation base face of the main body rack and located on the downstream of the pretreatment module, and the straightening module comprises a primary straightening wheel set and a dynamic compensation straightening wheel; the detection module comprises a first visual detection station and a second visual detection station which are fixed to the main body rack, the first visual detection station is located between the preprocessing module and the straightening module, and the second visual detection station is located behind the straightening module.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire production and processing equipment, in particular to a tire bead production and processing straightening device and method. BACKGROUND

[0002] In the production and processing of tire beads, traditional straightening techniques mainly rely on straightening devices with fixed parameters. Once the process parameters such as straightening force and conveying speed of these devices are set, they remain unchanged. The design and operation of these devices are based on standard or average material properties.

[0003] However, in actual production, there are objective differences in the physical properties of different batches and different specifications of steel beads, such as elasticity and rigidity. The fluctuation of these material properties makes it impossible for fixed processing parameters to achieve ideal straightening results for each steel bead. This situation leads to poor straightness consistency of the final product, making it difficult to ensure the uniform implementation of high-quality standards.

[0004] The above situation and deficiencies are mainly due to the lack of individual difference perception and real-time adjustment capability of traditional straightening devices. The devices cannot detect the specific physical properties of steel beads online, and lack of execution mechanisms and control logic for dynamically correcting straightening parameters based on detection results. As a result, when encountering steel beads with material properties deviating from standard values, the device cannot make adaptive adjustments, thereby affecting the quality stability and consistency of the final product.

[0005] The above information disclosed in the background section is only used to enhance the understanding of the background of the present disclosure, and therefore it can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] The purpose of the present application is to provide a tire bead production and processing straightening device and method to solve the problems raised in the background.

[0007] The technical solution of the present application is as follows: A main body frame is provided with guide rails and a mounting base on the main body frame; A pretreatment module is installed at the feed end of the main body frame. The pretreatment module includes a gripper for clamping the steel bead and a feed roller driven by a servo motor. A swing arm is rotatably installed inside the pretreatment module. A straightening module is installed on the mounting base of the main body frame and located downstream of the pretreatment module. The straightening module includes a primary straightening wheel set and a dynamic compensation straightening wheel. The detection module comprises a first visual detection station and a second visual detection station fixed to the main body frame, the first visual detection station is located between the pretreatment module and the straightening module, and the second visual detection station is located after the straightening module. The controller is electrically connected with the servo motor of the pretreatment module, the dynamic compensation straightening wheel of the straightening module, and the first visual detection station and the second visual detection station of the detection module.

[0008] Preferably, the pretreatment module further comprises a tension detection wheel arranged at one end of a swing arm, the other end of the swing arm abuts against a tension sensor, the tension detection wheel is used to transmit the tension change of the bead to the tension sensor through the swing arm, and a tension signal is generated by the tension sensor and sent to the controller.

[0009] Preferably, the dynamic compensation straightening wheel comprises a linear module driven by a high-response servo motor, the linear module is coupled to the dynamic compensation straightening wheel, and is used to change the pressing depth of the dynamic compensation straightening wheel on the bead in real time and accurately according to the instruction of the controller.

[0010] Preferably, the first visual detection station comprises a line array camera for capturing the profile of the bead and a laser displacement sensor for measuring the diameter of the bead; the second visual detection station comprises a line array camera for measuring the residual curvature of the straightened bead.

[0011] A straightening method for producing and processing a tire bead, comprising: The controller controls the first visual detection station to collect the initial geometric characteristics of the bead, and determines the estimated rebound coefficient based on the comparison between the initial geometric characteristics and the pre-stored rebound characteristic database; The controller instructs the dynamic compensation straightening wheel to apply a proactive pressing amount during the initial processing stage of the bead, and controls the second visual detection station to measure the residual curvature response caused by the proactive pressing amount, and then calculates and updates the real-time dynamic rebound coefficient; The controller calculates the basic pressing amount based on the real-time dynamic rebound coefficient, and sets the basic pressing amount as the pressing depth of the primary straightening wheel set; The controller continuously controls the second visual detection station to measure the real-time residual curvature during the subsequent processing stage, and calculates the compensation pressing amount based on the deviation between the real-time residual curvature and the target straightness, which is used to instruct the dynamic compensation straightening wheel to perform dynamic compensation.

[0012] Preferably, the step of calculating and updating the real-time dynamic springback coefficient comprises: establishing a dynamic causal relationship model between the input variable of the active probe indentation and the output variable of the residual curvature response, and solving the model to obtain the real-time dynamic springback coefficient.

[0013] Preferably, the initial geometric characteristics include three-dimensional curvature profile data and diameter data continuously collected along the length direction of the bead.

[0014] Preferably, after the step of the controller calculating the base indentation based on the real-time dynamic springback coefficient, it further comprises: the controller setting the conveying speed and tension matching the material characteristics based on the real-time dynamic springback coefficient, and instructing the feed roller and the gripper to execute.

[0015] Preferably, the tension is fed back in real time by a tension detection wheel, which is used for closed-loop tension control by the controller.

[0016] The present application provides a tire bead straightening device and method by improvement, which has the following improvements and advantages compared with the prior art: 1. The core difference of the present application is to establish a closed-loop adaptive control system including prediction, measurement, calibration and compensation. The system first collects the initial geometric characteristics of the bead through the first visual detection station, and performs preliminary prediction by comparing with the database. The real-time dynamic springback coefficient of the current bead is accurately calibrated by applying the active probe indentation and measuring its response in the initial processing stage. The residual curvature is continuously fed back by the second visual detection station during the whole processing process, and the dynamic compensation straightening wheel is instructed to make real-time fine adjustment. This processing method enables the device to generate personalized straightening scheme for each bead, and breaks away from the dependence on fixed parameters, so as to adapt to the individual differences and fluctuations of materials. 2. The present application not only adjusts the indentation depth of the straightening wheel. The controller calculates the base indentation based on the real-time dynamic springback coefficient, and simultaneously sets the conveying speed and processing tension matching the material rigidity reflected by the coefficient, and instructs the feed roller and the gripper to execute. For example, for the bead with strong springback, the conveying speed is appropriately reduced and greater tension is applied. In addition, through the real-time feedback of the tension detection wheel and the tension sensor, the processing tension is controlled in a closed loop to ensure that the actual tension is stable in the target interval matching the material characteristics. The comprehensive regulation of multiple variables such as indentation, speed and tension makes the whole processing chain achieve synergistic optimization, which further guarantees the stability and high quality of the straightening effect. 3.The scheme can significantly improve the adaptability to different batches and different specifications of steel wire ring materials, and fundamentally improve the straightness consistency of the final product, ensuring the high uniformity of product quality. At the same time, the automatic online calibration and real-time compensation function reduces the need for manual intervention and dependence on the experience of operators, improving the automation level and stability of the production process. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further explained in conjunction with the drawings and embodiments: Figure 1 is a schematic diagram of the overall structure of a straightening device for tire steel wire ring production and processing; Figure 2 is a schematic diagram of the structure of the pretreatment module; Figure 3 is a schematic diagram of the structure of the straightening module and the detection module; Figure 4 is a schematic diagram of the method flow structure of the application; In the figure: 100, main body frame; 110, guide rail; 120, installation base surface; 200, pretreatment module; 210, gripper; 220, feed roller; 230, tension detection wheel; 300, straightening module; 310, primary straightening wheel set; 320, dynamic compensation straightening wheel; 400, detection module; 410, first visual detection station; 411, line array camera; 412, laser displacement sensor; 420, second visual detection station. DETAILED DESCRIPTION

[0018] To make the purpose, technical scheme and advantages of the application clearer and more apparent, the application will be further described in detail below with specific examples

[0019] Example 1 Please refer to Figures 1-3 The application provides a straightening device for tire steel wire ring production and processing, comprising: The main body frame 100 is provided with a guide rail 110 and an installation base surface 120; The pretreatment module 200 is installed at the feed end of the main body frame 100, and the pretreatment module 200 includes a gripper 210 for clamping the steel wire ring and a feed roller 220 driven by a servo motor; a swing arm is rotatably installed inside the pretreatment module 200; The straightening module 300 is installed on the installation base surface 120 of the main body frame 100 and located downstream of the pretreatment module 200, and the straightening module 300 includes a primary straightening wheel set 310 and a dynamic compensation straightening wheel 320; The detection module 400 comprises a first visual detection station 410 and a second visual detection station 420 fixed on the main body rack 100, the first visual detection station 410 is located between the pretreatment module 200 and the straightening module 300, and the second visual detection station 420 is located after the straightening module 300; A controller is electrically connected with the servo motor of the pretreatment module 200, the dynamic compensation straightening wheel 320 of the straightening module 300 and the first visual detection station 410 and the second visual detection station 420 of the detection module 400 respectively.

[0020] The straightening device for tire bead production and processing provided in the embodiment is used to solve the problem that the straightening device in the prior art has fixed parameters and cannot adapt to the material characteristic changes of different batches and different specifications of steel wire beads, resulting in poor consistency of product straightness. The main body rack 100 of the device provides a stable installation reference for each functional module, the guide rail 110 provided thereon is used to guide the conveying path of the steel wire bead, and the installation base surface 120 ensures the relative position accuracy of each module; the pretreatment module 200 cooperates with the feeding roller 220 through the gripper 210 to realize stable conveying of the steel wire bead. The straightening module 300 applies physical straightening to the steel wire bead through the combination of the primary straightening wheel set 310 and the dynamic compensation straightening wheel 320; the key of this structure lies in the cooperation of the detection module 400 and the controller, the first visual detection station 410 obtains the original shape data of the steel wire bead before it enters the straightening module 300, and the second visual detection station 420 measures the straightening effect after the steel wire bead leaves the straightening module 300; the controller estimates the straightening parameters based on the data of the first visual detection station 410 and dynamically adjusts the action of the straightening module 300 according to the real-time feedback data of the second visual detection station 420; this processing method enables the device to perceive the individual characteristics of each steel wire bead and make real-time corrections during the processing process, thereby improving the adaptability to different materials and the straightness of the final product; The gripper 210 is a component capable of exerting a fixing action on the steel wire bead, and the implementation manner is not limited to one, for example, it can be a set of pneumatic three-jaw chuck, which fixes one end of the steel wire bead through the inner diameter or outer diameter clamping mode. The controller can be a Siemens S7-1200 series PLC.

[0021] The pretreatment module 200 further comprises a tension detection wheel 230, the tension detection wheel 230 is arranged at one end of the swing arm, the other end of the swing arm abuts against the tension sensor, the tension detection wheel 230 is used to transmit the tension change of the steel wire bead to the tension sensor through the swing arm, and the tension signal generated by the tension sensor is sent to the controller.

[0022] The tension detection wheel 230 in the embodiment functions to monitor the tension state of the bead in the conveying process in real time. In the straightening process of the bead, stable and matched tension is a prerequisite for ensuring the uniformity of the straightening effect; too small tension may cause the bead to slip or feed unstably in the straightening wheel set, and too large tension may cause excessive stretching of the bead, and even affect the microstructure of the material; the tension detection wheel 230 contacts the bead through an idler, and the tension fluctuation of the bead will cause a slight position change of the idler, which is amplified through the lever structure of the swing arm and transmitted to the tension sensor; the tension sensor is an element that can convert a pressure signal into an electrical signal, for example, a S-type weighing sensor of the MT series of Mettler Toledo can be selected to convert the received pressure change into a continuous electrical signal and transmit it to the controller; after receiving the signal, the controller obtains the real-time tension value; this design enables the controller to not only know the preset feeding speed, but also accurately perceive the stress state of the bead in the straightening process, providing data input for the subsequent controller to make fine tension adjustment based on the material characteristics, thereby ensuring the stability of the machining process.

[0023] The dynamic compensation straightening wheel 320 includes a linear module driven by a high-response servo motor, which is coupled to the dynamic compensation straightening wheel 320 for changing the pressing depth of the steel wire ring in real time and accurately according to the instructions of the controller.

[0024] The dynamic compensation straightening wheel 320 in the embodiment aims to make small and fast corrections to the residual bending of the steel wire ring. The primary straightening wheel set 310 provides basic and macro straightening force, but due to the problems such as uneven material quality and slight diameter changes of the steel wire ring itself, it is difficult to achieve high straightness by fixed primary straightening. This two-stage straightening strategy combining macroscopic preset and microscopic compensation decouples the straightening task: the primary straightening wheel set 310 is responsible for handling the predictable macro bending determined by the overall material characteristics, and the dynamic compensation straightening wheel 320 focuses on dealing with the unpredictable local unevenness randomly appearing along the length direction of the wire material. The dynamic compensation straightening wheel 320 is realized by a linear module driven by a high-response servo motor; the high-response servo motor, such as the Yaskawa Sigma-7 series servo motor, can receive high-frequency instructions from the controller and complete start-stop and rotation instantaneously; the linear module is a mechanism for converting rotary motion into linear motion, and the common implementation is a ball screw structure; the rotation of the servo motor is converted into the precise linear displacement of the linear slide by the ball screw, thereby driving the straightening wheel to change the pressing depth of the steel ring; when the controller calculates the pressing amount that needs to be compensated according to the data of the second visual detection station 420, it sends instructions to the servo motor, the motor rotates a specific angle, and the linear module pushes the straightening wheel to complete micron-level pressing depth adjustment; this structure enables the device to have the ability to make real-time fine adjustment of the straightening effect, making up for the shortcomings of primary straightening, and is a key execution link to achieve high-precision straightening.

[0025] The first visual detection station 410 includes a line array camera 411 for capturing the profile of the steel ring and a laser displacement sensor 412 for measuring the diameter of the steel ring; the second visual detection station 420 includes a line array camera 411 for measuring the residual curvature of the straightened steel ring.

[0026] The detection module 400 in the embodiment is designed to non-contact and accurately obtain the geometric shape data of the steel ring before and after straightening; the line array camera 411 and the laser displacement sensor 412 of the first visual detection station 410 work together to obtain the complete initial state information of the steel ring; the line array camera 411, such as the Keyence LJ-V series, is installed perpendicular to the steel ring conveying path; when the steel ring passes through, the camera scans line by line and splices into a complete two-dimensional profile image for calculating the initial three-dimensional curvature; at the same time, the laser displacement sensor 412, such as the Keyence LK-G series, emits a laser beam to the surface of the steel ring and receives the reflected light; by calculating the change of the light spot position, the diameter change of the steel ring along the length direction is accurately measured; the combination of these two data provides a basis for the controller to comprehensively evaluate the original deformation degree and material consistency of the steel ring; the line array camera 411 of the second visual detection station 420 is installed and works in the same way as the camera of the first station; its function is to measure the small curvature, i.e. residual curvature, of the steel ring after primary straightening and dynamic compensation straightening; this measurement result is a direct indicator for evaluating the current straightening effect and a decision basis for the controller to make dynamic compensation adjustment; the data of the first visual detection station 410 is predictive, used to set the initial parameters; the data of the second visual detection station 420 is feedback, used for real-time correction.

[0027] The connection relationship between the line array camera 411 and the laser displacement sensor 412 of the first visual inspection station 410 and the line array camera 411 of the second visual inspection station 420 is to realize the data flow of measurement-straightening-re-measurement; as long as the geometric data before straightening and the geometric data after straightening can be provided to the controller for calculation, the specific connection mode is not limited; for example, all visual devices can be connected to the controller through industrial Ethernet, and the controller can uniformly manage data acquisition and synchronization; or, the sensor signal can be converted into a digital signal recognizable by the controller through a special data acquisition card.

[0028] Embodiment 2 Please refer to Figure 4 A straightening method for producing and processing a tire bead, comprising: The controller controls the first visual inspection station 410 to collect the initial geometric characteristics of the bead, and determines the estimated rebound coefficient based on the comparison between the initial geometric characteristics and the pre-stored rebound characteristic database; The controller instructs the dynamic compensation straightening wheel 320 to apply the active probe indentation amount during the initial processing stage of the bead, and controls the second visual inspection station 420 to measure the residual curvature response amount caused by the active probe indentation amount, and then calculates and updates the real-time dynamic rebound coefficient; The controller calculates the basic indentation amount based on the real-time dynamic rebound coefficient, and sets the basic indentation amount as the indentation depth of the primary straightening wheel set 310; The controller continuously controls the second visual inspection station 420 to measure the real-time residual curvature during the subsequent processing stage, and calculates the compensation indentation amount based on the deviation between the real-time residual curvature and the target straightness, which is used to instruct the dynamic compensation straightening wheel 320 to perform dynamic compensation.

[0029] The method provided by the embodiment is characterized in that a personalized straightening scheme is generated for each bead in a self-learning and self-adaptive manner. The starting point of the method is that the controller obtains the initial geometric characteristics of the bead by using the first visual inspection station 410, and obtains the estimated rebound coefficient value by comparing with the database. The estimated value serves as a reasonable initial guess for subsequent accurate calibration, avoiding completely blind trial and error. The estimated value serves as a reasonable initial guess for subsequent accurate calibration, avoiding completely blind trial and error. This not only greatly improves the calibration efficiency, but also ensures the stability and yield of the initial processing stage by setting the initial parameters close to the optimal value. The rebound characteristic database can be pre-established by a large number of physical experiments on a plurality of different specifications and different batches of standard wire ring samples. In the experiments, the rebound data corresponding to each sample under different initial geometric deformations after a series of known straightening forces are recorded. Through data fitting and calibration, a mapping relationship between the initial geometric characteristics and the rebound coefficient is formed and stored in the database. The method enters a key online calibration stage. The controller actively allows the dynamic compensation straightening wheel 320 to apply a known and small indentation amount change when processing a small section at the front end of the wire ring, which is equivalent to actively asking the material properties of the wire ring. The second visual detection station 420 is responsible for capturing the answer of the wire ring to this question, that is, how much change the residual curvature has; the controller analyzes the relationship between the question and the answer, that is, the change in the indentation amount and the curvature response amount, so as to deduce the real-time dynamic rebound coefficient which can accurately reflect the real physical properties of the current wire ring. This coefficient is more accurate than the estimated value in the database because it is derived from direct testing of the object itself. This real-time calibration mechanism ensures that the straightening parameters not only adapt to the batch-to-batch differences of different batches of wire rings, but also dynamically track and compensate for the batch-to-batch fluctuations of the same wire ring due to internal material non-uniformity or changes in the processing environment temperature, thereby achieving higher-dimensional adaptive control. After obtaining the accurate rebound coefficient, the controller can calculate the matching basic indentation amount and set it to the primary straightening wheel set 310 to complete the accurate straightening of most of the subsequent wire rings. There are many specific setting methods; for example, the controller can display the calculated basic indentation amount value on the human-machine interface of the device, and the operator can manually set the indentation depth of the primary straightening wheel set 310 to the target position by rotating the precision adjustment screw rod according to the prompt value. As another optional automatic implementation method, each adjustment screw rod of the primary straightening wheel set 310 can be coupled with a stepper motor or a servo motor, and the controller can directly issue instructions to drive the motor to rotate, thereby automatically completing the setting of the basic indentation amount, and the entire process does not require manual intervention.

[0030] During the entire processing process, the controller also continuously monitors the straightening effect using the second visual detection station 420, and calculates the compensation amount and instructs the dynamic compensation straightening wheel 320 to correct once a small deviation from the ideal straightness is found. This method integrates prediction, measurement, calibration, and compensation into one, allowing the device to adapt to individual differences and fluctuations in materials without relying on fixed parameters.

[0031] The step of calculating and updating the real-time dynamic rebound coefficient includes: establishing a dynamic causal relationship model between the actively detected indentation amount as the input variable and the residual curvature response amount as the output variable, and solving the model to obtain the real-time dynamic rebound coefficient.

[0032] The calculation process of the real-time dynamic springback coefficient in the embodiment is a process of establishing a physical model and solving, and the purpose is to quantify the springback characteristics of the wire loop. The derivation process is that the controller records the active probe indentation amount applied as input data, and records the residual curvature response amount measured by the second visual detection station 420 as output data. Since the indentation amount is the cause of the change in curvature, there is a direct causal relationship between the two. The algorithm inside the controller will establish a mathematical model to describe this relationship, such as a simple linear proportional model or a more complex nonlinear model. The essence of the model is to reflect how much straightening force needs to be applied to produce a certain change in curvature. By solving the model, such as calculating the slope or key parameters of the model, the numerical value can be obtained, which is the real-time dynamic springback coefficient. If a small change in indentation amount can cause a large change in residual curvature, the solved coefficient value will be small, indicating that the material has weak springback and is easy to straighten. Conversely, if a large change in indentation amount is needed to cause a small change in residual curvature, the solved coefficient value will be large, indicating that the material has strong springback and needs more straightening force. In a specific implementation, the dynamic causal relationship model can be simplified as a linear relationship: wherein, is the active probe indentation amount applied by the controller to the dynamic compensation straightening wheel 320; is the residual curvature response amount measured by the second visual detection station 420; is the proportional coefficient to be solved, which can directly reflect the current springback characteristics of the wire loop, and the numerical value is positively correlated with the real-time dynamic springback coefficient. According to the model, if a large change in indentation amount is needed to cause a small change in residual curvature , the solved coefficient value will be large, indicating that the material has strong springback and needs more straightening force; conversely, if a small change in indentation amount can cause a large change in residual curvature, the solved coefficient value will be small, indicating that the material has weak springback and is easy to straighten. The controller records at least one set of corresponding and data in the calibration stage, and the value of can be obtained by solving the linear equation. Those skilled in the art can also establish more complex nonlinear models such as second-order polynomials for solving according to different requirements for accuracy, which are all routine technical choices under the concept of the present application.

[0033] In this way, the method converts the abstract springback characteristics into specific numerical values that can be used for engineering calculations.

[0034] The initial geometric characteristics include three-dimensional curvature profile data and diameter data collected continuously along the length of the bead.

[0035] The initial geometric characteristics defined in this embodiment aim to comprehensively and multi-dimensionally describe the original state of the bead when it enters the device; the three-dimensional curvature profile data, collected by the line array camera 411 of the first vision detection station 410, reflects the bending shape of the bead in space, including its bending direction and degree; the diameter data, collected by the laser displacement sensor 412, reflects the thickness variation of the bead along the length direction; the combination of these two data enables the controller to construct a digital model of the bead. This provides more information than measuring only a single parameter, such as only measuring curvature or only measuring diameter; for example, if the controller finds that the curvature of a certain section of the bead suddenly increases, while its diameter is smaller than the average value, it can be inferred that this position may be a material defect point that needs special attention in subsequent processing; therefore, collecting comprehensive and continuous initial geometric characteristics is the basis for subsequent accurate springback characteristic estimation and development of reasonable straightening strategies.

[0036] After the step of the controller calculating the base indentation amount based on the real-time dynamic springback coefficient, the method further includes: the controller setting the conveying speed and tension matching the material characteristics based on the real-time dynamic springback coefficient, and instructing the feed roller 220 and the gripper 210 to execute.

[0037] The step added in this embodiment aims to achieve global collaborative optimization of processing parameters. After calculating the accurate base indentation amount, the controller not only adjusts the force of the straightening wheel, but also synchronously adjusts the conveying speed and processing tension of the bead. This is because the straightening process is a multi-variable interdependent system, and speed and tension are also key factors affecting the straightening effect. Based on the known real-time dynamic springback coefficient, the controller can infer the rigidity of the material; for beads with strong springback characteristics and large rigidity, the conveying speed may need to be appropriately reduced, and a larger tension may need to be applied, to ensure that the straightening wheel has sufficient acting time and to prevent the bead from deviating under strong straightening force; for beads with weak springback characteristics and small rigidity, the conveying speed can be appropriately increased, and a smaller tension can be used, to improve production efficiency and avoid unnecessary stretching of the bead; the controller precisely executes these matched parameter settings by issuing instructions to the servo motor driving the feed roller 220 and the pneumatic system controlling the gripper 210. This step extends the recognition of material characteristics from single indentation adjustment to comprehensive regulation of the entire processing chain, enabling the overall working state of the device to better match the inherent properties of the material.

[0038] The tension is fed back in real time by the tension detection wheel 230 applied to the above device, for closed-loop tension control by the controller.

[0039] The further limitation of the tension control mode in this embodiment is to ensure that the set target tension can be accurately and stably executed. The controller sets a target tension value that matches the material characteristics, but setting alone is not enough. A mechanism is also needed to ensure that the actual tension can be stably maintained at this target value. The tension detection wheel 230 and the tension sensor connected thereto provide real-time feedback data here. The controller continuously compares the actual tension measurement value from the sensor with the pre-set target tension value. If the actual tension is found to be lower than the target value, the controller will fine-tune the servo motor speed of the feed roller 220 or the clamping force of the clamp 210 to increase the tension. If the actual tension is found to be higher than the target value, the opposite adjustment will be made. This continuous process of setting-measuring-comparing-adjusting makes the tension control not an open command, but a feedback regulation system. It can overcome various disturbances that may occur during processing, such as small fluctuations in motor load, changes in guide rail 110 friction, etc., and always stabilize the actual tension in the ideal interval most suitable for the current material characteristics, providing a guarantee for achieving high-quality and high-consistency straightening effect.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A straightening device for processing of a tire bead, characterized in that, The application relates to a steel ring straightening device, which comprises the following parts: a main frame (100) provided with guide rails (110) and a mounting base (120); a pretreatment module (200) installed at the feeding end of the main frame (100), the pretreatment module (200) comprising a clamp (210) for clamping a steel ring and a feeding roller (220) driven by a servo motor, and a swing arm rotatably installed inside the pretreatment module (200); a straightening module (300) installed on the mounting base (120) of the main frame (100) and located downstream of the pretreatment module (200), the straightening module (300) comprising a primary straightening wheel set (310) and a dynamic compensation straightening wheel (320); a detection module (400) comprising a first visual detection station (410) and a second visual detection station (420) fixed to the main frame (100), the first visual detection station (410) being located between the pretreatment module (200) and the straightening module (300), and the second visual detection station (420) being located behind the straightening module (300); a controller electrically connected with the servo motor of the pretreatment module (200), the dynamic compensation straightening wheel (320) of the straightening module (300) and the first visual detection station (410) and the second visual detection station (420) of the detection module (400) respectively.

2. A straightening device for a tire bead as claimed in claim 1, characterized in that The pretreatment module (200) further comprises a tension detection wheel (230) arranged at one end of the swing arm, the other end of the swing arm abutting against a tension sensor, the tension detection wheel (230) being used for transmitting the tension change of the steel ring to the tension sensor through the swing arm, and generating a tension signal and sending the tension signal to the controller by the tension sensor.

3. A straightening device for tire bead production according to claim 1, characterized in that, The dynamic compensation straightening wheel (320) comprises a linear module driven by a high-response servo motor, the linear module being coupled to the dynamic compensation straightening wheel (320) and used for changing the pressing depth of the dynamic compensation straightening wheel (320) on the steel ring in real time and accurately according to the instruction of the controller.

4. The straightening device for tire bead production and processing according to claim 1, characterized in that, The first visual detection station (410) comprises a line array camera (411) used for capturing the profile of the steel ring and a laser displacement sensor (412) used for measuring the diameter of the steel ring; and the second visual detection station (420) comprises a line array camera (411) used for measuring the residual curvature of the straightened steel ring.

5. A straightening method for a tire bead production and processing, applied to the tire bead production and processing straightening device according to any one of claims 1-4, characterized in that, The controller controls the first visual detection station (410) to collect the initial geometric characteristics of the steel ring, and determines an estimated rebound coefficient by comparing the initial geometric characteristics with a pre-stored rebound characteristic database; The controller instructs the dynamic compensation straightening wheel (320) to apply an active detection pressing amount in the initial processing stage of the steel ring, and controls the second visual detection station (420) to measure a residual curvature response amount caused by the active detection pressing amount, so as to calculate and update a real-time dynamic rebound coefficient; The controller calculates a basic pressing amount based on the real-time dynamic rebound coefficient, and sets the basic pressing amount as the pressing depth of the primary straightening wheel set (310). ​ The controller continuously controls the second vision detection station (420) to measure real-time residual curvature in a subsequent processing stage, and calculates a compensation indentation amount based on deviation of the real-time residual curvature from a target straightness, for instructing the dynamic compensation straightening wheel (320) to perform dynamic compensation.

6. A method of straightening a tire bead as defined in claim 5, wherein, The step of calculating and updating the real-time dynamic springback coefficient comprises: establishing a dynamic causal relationship model between the active probe indentation amount as an input variable and the residual curvature response amount as an output variable, and solving the model to obtain the real-time dynamic springback coefficient.

7. A method of straightening a tire bead as defined in claim 5, wherein, The initial geometric characteristics include three-dimensional curvature profile data and diameter data continuously collected along the length direction of the bead.

8. A method of straightening a tire bead as defined in claim 5, wherein, After the step of the controller calculating the base indentation amount based on the real-time dynamic springback coefficient, the method further comprises: the controller setting a conveying speed and tension matched with material characteristics based on the real-time dynamic springback coefficient, and instructing the feed roller (220) and the gripper (210) to perform.

9. A method of straightening a tire bead as defined in claim 8, wherein, The tension is fed back in real time by a tension detection wheel (230) for closed-loop tension control by the controller.

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